Patent US558572A successfully refreshed from Google Patents.
Patent US3704849A successfully refreshed from Google Patents.
US3704849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boltless gym set
Assignee: Individual
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Filing: 1969-09-23
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Granted: 1972-12-05
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Expires: 1989-09-23
Abstract
Abstract A gym set having boltless joining members wherein one member interlocks into the other through gravity friction. This frame construction has plays that are connected to the top horizontal bar of the frame structure, the top bar of the structure having a minimum number of holes for receiving plays, thus allowing for a lighter gauge tubing while at the same time providing a stronger member. The end of one member of the structure having tapered, reinforced ends for insertion within a complementary opening in another member to provide tightening at the interlocked joint of the two members while in use. The top bar having reinforced members extending from its center to its ends, thus eliminating the need of an additional two legs for center support.
Inventors
- 👤 Martin Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:53
CPC Classifications
A; A63; A63B; A63B9/00; A63B2208/00; A63B2208/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49861; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T403/00; Y10T403/44; Y10T403/70; Y10T403/7001; Y10T403/7003
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
168 words
A gym set comprising a top bar, leg means for support of said top bar and a plurality of play supports connected to said top bar, said top bar having holes at its upper portion for receiving said play supports, said play supports including hooked ends for insertion within the holes of said tOp bar and supported thereby, said leg means includes a first leg and a second leg, said first leg having a tapered end and said second leg having a tapered end with a slot formed therein of a complementary predetermined size to receive the tapered end of said first leg and thereby forming a crossing therewith and further, wherein said top bar having slots of a complementary predetermined size to receive the tapered ends of said first leg and said second leg resulting in a gravity friction connection between said first leg and said second leg, and a gravity friction connection between said mentioned legs and said top bar as the gym set is used.
Claim 2
Dependent Claim
168 words
A gym set comprising a top bar, leg means for support of said top bar and a plurality of play supports connected to said top bar, said top bar having holes at its upper portion for receiving said play supports, said play supports including hooked ends for insertion within the holes of said tOp bar and supported thereby, said leg means includes a first leg and a second leg, said first leg having a tapered end and said second leg having a tapered end with a slot formed therein of a complementary predetermined size to receive the tapered end of said first leg and thereby forming a crossing therewith and further, wherein said top bar having slots of a complementary predetermined size to receive the tapered ends of said first leg and said second leg resulting in a gravity friction connection between said first leg and said second leg, and a gravity friction connection between said mentioned legs and said top bar as the gym set is used.
Claim 3
Dependent Claim
68 words
The structure defined by claim 1 wherein said first leg and said second leg of said leg means are each formed of an elongated tube having open ends and said structure further comprises a sleeve for insertion at one end of said first leg and said second leg and wherein said ends are flattened to produce reinforced tapered ends for insertion within the slots of said top bar.
Claim 4
Dependent Claim
63 words
The structure of claim 1 wherein said top bar comprises a pair of horizontal pieces coaxially connected at one end thereof at the center of said top bar and an overhanging trestle supporting the center of said top bar at the connection of said two horizontal sections and extending to interconnect the legs at the connection of said legs with said top bar.
Claim 5
Dependent Claim
74 words
The structure of claim 3 wherein said trestle comprises a vertical bar threaded through the center of said top bar at the connecting ends of said two pieces and extending upwardly thereof, and a pair of opposed bars extending from the top of said vertical bar to the connection of said legs with said top bar, and inserted within the crossings of said legs and held in place thereby by said trestle structure supports.
Claim 6
Dependent Claim
32 words
The structure of claim 4 wherein the ends of said pair of opposed bars are of tapered triangular configuration interconnecting said legs and said top bar at the crossings of said legs.
Claim 7
Dependent Claim
58 words
The structure of claim 4 further comprising end bars extending from the free ends of said top bar, and said end bars including ends of tapered triangular configuration for firmly wedging between the crossings of said legs, said end bars being adapted for use with an additional play supports at the ends of said top bar as needed.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |